Unicorn: You must have added a file to the Data folder. (How does a unicorn sound?)

Horse: Your browser can play .ogg files, e.g. Chrome, Firefox, Opera.

Rooster: Your browser can play .wav files, but not .ogg files, e.g. Safari.

Duck: Your browser can only play .mp3 files, e.g. Internet Explorer.

None: Your speakers may be off. (Do you have speakers?)

[0] :classaudioAdvanced: MiPageSample[1] ⍝ Control:: _html.audio _html.source [2] ⍝ Description:: Specify a list of alternate audio sources [3] [4] ∇ Compose[5] :Access public
[6] [7] mysound←'autoplay=''controls='Add_.audio'Your browser does not support the audio tag.'[8] [9] ⍝ This is a list of alternative sounds in preferred order [10]'src=../Data/unicorn.mp3'mysound.Add_.source ⍝ this file doesn't exist [11]'src=../Data/horse.ogg'mysound.Add_.source[12]'src=../Data/rooster.wav'mysound.Add_.source[13]'src=../Data/quack.mp3'mysound.Add_.source[14][15]Add_.p'Which animal do you hear?'[16]mylist←Add_.ul[17]mylist.Add_.li'Unicorn: You must have added a file to the Data folder. (How does a unicorn sound?)'[18]mylist.Add_.li'Horse: Your browser can play .ogg files, e.g. Chrome, Firefox, Opera.'[19]mylist.Add_.li'Rooster: Your browser can play .wav files, but not .ogg files, e.g. Safari.'[20]mylist.Add_.li'Duck: Your browser can only play .mp3 files, e.g. Internet Explorer.'[21]mylist.Add_.li'None: Your speakers may be off. (Do you have speakers?)'[22]∇[23]:endclass